Training: With Microsoft Outlook on your PC, Mac or mobile device, you can organize email, share your calendar, schedule meetings, and share files. Watch this online video.

On your PC, go to Xbox.com and select Sign in.If there are problems with your account, the instructions will help you solve them. If you can’t go beyond the sign-in screen, select Forgot my password and follow the instructions.

If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list.

Ask for design ideas any time by choosing Design > Designer on the ribbon.. If Designer doesn't have any design ideas for you or you don't see the Designer button, there are a few possible reasons for that situation. Want to learn more about Designer?

Get more information about managing your Xbox subscriptions, issues with billing, and more.

Excel makes it easy to crunch numbers. With Excel, you can streamline data entry with AutoFill. Then, get chart recommendations based on your data, and create them with one click.

If you need to sum a column or row of numbers, let Excel do the math for you. Select a cell next to the numbers you want to sum, select AutoSum on the Home tab, press Enter, and you’re done. When you select AutoSum, Excel automatically enters a formula (that uses the SUM function) to sum the numbers. Here’s an example.

Resolution. To fix this problem automatically, run the "Fix problems that programs cannot be installed or uninstalled" troubleshooter to repair issues that block program installation or removal because of corrupted registry keys.Important To perform many of the methods and steps in this article, you must be logged on to your computer as an administrator.

You can add your email signature automatically to all outgoing messages, or you can choose to add your signature only to specific messages. If you use both Outlook Web App and Outlook, you need to create a signature in each.

Choose the mobile app. Open a browser on your computer and go to portal.office.com.Sign in to your Office 365 for business account.